Changing from oil central heating

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Phones4Chris said:

NedS said:

Who is your DNO? National Grid, for example, will not install anything more than 80A fuse on a single phase connection.

https://www.nationalgrid.co.uk/downloads-view-reciteme/633928

I'm surprised you didn't require a fuse upgrade when the EV charging point was installed. What is your peak demand? Were the DNO correctly notified? What paperwork was completed and sent to the DNO?

Thanks for that heads up. I currently have a 100A and would not be at all happy if it were changed to 80A as the minimum load at say 0100GMT on a cold winter's night would be 20.4kW and that's assuming I wasn't cooking.

I have 8 storage heaters and back when electricity was cheap and they were all in use, the 80A fuse burnt out one night. National Grid (Western Power back then) replaced it with a 100A.